electroplated diamond core bit 1,can avoid diamond oxidation and degradation The bit crown of electroplated diamond core bits are electroplated with layers of ... to the impregnated diamond core bit, for drilling different rock formations, the matrix hardness of electroplated diamond core bit could be different, ... HQ, PQ, AQTK, BQTK ,BQ3 ,NQ2, NQ3, NQIT, HQ3, HQTT, PQ3, PQTTT2 series T2 46, T2 56 ,T2 ...